WM8761 Datasheet, PDF (1/20 Pages) Wolfson Microelectronics plc – 24BIT 192KHZ STEREO DAC

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24-bit 192kHz Stereo DAC
WM8761
DESCRIPTION
The WM8761 is a high performance stereo DAC designed
for audio applications such as DVD, home theatre systems,
and digital TV. The WM8761 supports data input word
lengths from 16 to 24-bits and sampling rates up to 192kHz.
The WM8761 consists of a serial interface port, digital
interpolation filters, multi-bit sigma delta modulators and
stereo DAC in a 14-pin SOIC package.
The WM8761 has a hardware control interface for selection
of audio data interface format, mute and de-emphasis. The
WM8761 supports I²S, right justified or DSP interfaces.
The WM8761 is an ideal device to interface to AC-3,
DTS, and MPEG audio decoders for surround sound
applications, or for use in DVD players, including supporting
the implementation of 2 channels at 192kHz for high-end
DVD-Audio applications.
FEATURES
• Stereo DAC
• Audio Performance
- 100dB SNR (‘A’ weighted @ 48kHz)
- -90dB THD
• DAC Sampling Frequency: 8kHz – 192kHz
• Pin Selectable Audio Data Interface Format
- 16 to 24-bit I²S, 24-bit Right Justified or DSP
• 2.7V - 5.5V Supply Operation
• 14-pin SOIC Package
• Pin Compatible with WM8725
APPLICATIONS
• DVD Players
• Home Theatre Systems
• Digital TV
• Digital Set Top Boxes
BLOCK DIAGRAM
BCKIN
LRCIN
DIN
CONTROL
INTERFACE
W
WM8761
AUDIO
INTERFACE
MUTE
MUTE
DIGITAL FILTERS
SIGMA
DELTA
MODULATOR
SIGMA
DELTA
MODULATOR
DAC
DAC
LOW
PASS
FILTER
VOUTR
LOW
PASS
FILTER
VOUTL
CAP
WOLFSON MICROELECTRONICS plc
www.wolfsonmicro.com
Production Data, May 2004, Rev 4.0
Copyright 2004 Wolfson Microelectronics plc.